1 files changed, 16 insertions, 17 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 77268d18e78d..c65a4edafc33 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -374,14 +374,8 @@ static struct track *get_track(struct kmem_cache *s, void *object,
 static void set_track(struct kmem_cache *s, void *object,
                         enum track_item alloc, unsigned long addr)
 {
-        struct track *p;
+        struct track *p = get_track(s, object, alloc);
 
-        if (s->offset)
-                p = object + s->offset + sizeof(void *);
-        else
-                p = object + s->inuse;
-
-        p += alloc;
         if (addr) {
                 p->addr = addr;
                 p->cpu = smp_processor_id();
@@ -1724,7 +1718,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
         c = get_cpu_slab(s, smp_processor_id());
         debug_check_no_locks_freed(object, c->objsize);
         if (!(s->flags & SLAB_DEBUG_OBJECTS))
-                debug_check_no_obj_freed(object, s->objsize);
+                debug_check_no_obj_freed(object, c->objsize);
         if (likely(page == c->page && c->node >= 0)) {
                 object[c->offset] = c->freelist;
                 c->freelist = object;
@@ -1844,6 +1838,7 @@ static inline int calculate_order(int size)
         int order;
         int min_objects;
         int fraction;
+        int max_objects;
 
         /*
          * Attempt to find best configuration for a slab. This
@@ -1856,6 +1851,9 @@ static inline int calculate_order(int size)
         min_objects = slub_min_objects;
         if (!min_objects)
                 min_objects = 4 * (fls(nr_cpu_ids) + 1);
+        max_objects = (PAGE_SIZE << slub_max_order)/size;
+        min_objects = min(min_objects, max_objects);
+
         while (min_objects > 1) {
                 fraction = 16;
                 while (fraction >= 4) {
@@ -1865,7 +1863,7 @@ static inline int calculate_order(int size)
                                 return order;
                         fraction /= 2;
                 }
-                min_objects /= 2;
+                min_objects --;
         }
 
         /*
@@ -2478,7 +2476,7 @@ EXPORT_SYMBOL(kmem_cache_destroy);
  *              Kmalloc subsystem
  *******************************************************************/
 
-struct kmem_cache kmalloc_caches[PAGE_SHIFT + 1] __cacheline_aligned;
+struct kmem_cache kmalloc_caches[SLUB_PAGE_SHIFT] __cacheline_aligned;
 EXPORT_SYMBOL(kmalloc_caches);
 
 static int __init setup_slub_min_order(char *str)
@@ -2540,7 +2538,7 @@ panic:
 }
 
 #ifdef CONFIG_ZONE_DMA
-static struct kmem_cache *kmalloc_caches_dma[PAGE_SHIFT + 1];
+static struct kmem_cache *kmalloc_caches_dma[SLUB_PAGE_SHIFT];
 
 static void sysfs_add_func(struct work_struct *w)
 {
@@ -2661,7 +2659,7 @@ void *__kmalloc(size_t size, gfp_t flags)
 {
         struct kmem_cache *s;
 
-        if (unlikely(size > PAGE_SIZE))
+        if (unlikely(size > SLUB_MAX_SIZE))
                 return kmalloc_large(size, flags);
 
         s = get_slab(size, flags);
@@ -2689,7 +2687,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
 {
         struct kmem_cache *s;
 
-        if (unlikely(size > PAGE_SIZE))
+        if (unlikely(size > SLUB_MAX_SIZE))
                 return kmalloc_large_node(size, flags, node);
 
         s = get_slab(size, flags);
@@ -2739,6 +2737,7 @@ size_t ksize(const void *object)
          */
         return s->size;
 }
+EXPORT_SYMBOL(ksize);
 
 void kfree(const void *x)
 {
@@ -2988,7 +2987,7 @@ void __init kmem_cache_init(void)
                 caches++;
         }
 
-        for (i = KMALLOC_SHIFT_LOW; i <= PAGE_SHIFT; i++) {
+        for (i = KMALLOC_SHIFT_LOW; i < SLUB_PAGE_SHIFT; i++) {
                 create_kmalloc_cache(&kmalloc_caches[i],
                         "kmalloc", 1 << i, GFP_KERNEL);
                 caches++;
@@ -3025,7 +3024,7 @@ void __init kmem_cache_init(void)
         slab_state = UP;
 
         /* Provide the correct kmalloc names now that the caches are up */
-        for (i = KMALLOC_SHIFT_LOW; i <= PAGE_SHIFT; i++)
+        for (i = KMALLOC_SHIFT_LOW; i < SLUB_PAGE_SHIFT; i++)
                 kmalloc_caches[i]. name =
                         kasprintf(GFP_KERNEL, "kmalloc-%d", 1 << i);
 
@@ -3225,7 +3224,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
 {
         struct kmem_cache *s;
 
-        if (unlikely(size > PAGE_SIZE))
+        if (unlikely(size > SLUB_MAX_SIZE))
                 return kmalloc_large(size, gfpflags);
 
         s = get_slab(size, gfpflags);
@@ -3241,7 +3240,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
 {
         struct kmem_cache *s;
 
-        if (unlikely(size > PAGE_SIZE))
+        if (unlikely(size > SLUB_MAX_SIZE))
                 return kmalloc_large_node(size, gfpflags, node);
 
         s = get_slab(size, gfpflags);